In late June, two companies were given permits to sell chicken meat that has been grown in a lab. The companies say they will be serving the meat in restaurants this summer.
Unlike normal chicken meat, lab-grown meat isn’t created by raising and killing chickens. Instead, it’s a meat product developed from animal cells that are grow n in a lab. The process is called “cell-based” or “cultured” meat.
The process of creating lab-grown meat is completely different from the normal meat raising process. Scientists have known for a long time how to keep living cells alive and grow them in a lab. In this case, experts choose cells that can grow quickly and will have good flavour. The first cells come from live animals. Then the cells are grown inside large steel tanks, where they’re fed with everything they need to grow. In a few weeks, the cells grow into sheets of meat. The companies then form this meat into more familiar shapes that can be cooked and sold.
The companies say that their meat is better for the environment than meat from animals. Raising animals for food uses huge amounts of land and water. It also creates a lot of pollution. Raising animals for food create s about 15% of the world’s greenhouse gases. That’s why cutting back on eating meat is one of the easiest ways to fight climate change.
There are many companies these days that focus on making plant-based meat substitutes (替代物). But since lab-grown meat is made from animal cells, it is very hard to tell it apart from actual meat. It looks, smells, and tastes like chicken.
Polls (民意调查) have shown that many people aren’t too interested in lab-grown meat. Lots of people believe that “it just sounds strange”. But Russel Phillips, a biologist, suggests people give it a try. He says that once people try the meat, they will be amazed. The common response must be, “Oh, it tastes like chicken.”
But right now, the meat is far more expensive than meat from animals. Now that the companies have been approved, they have the huge challenge of figuring out how to make much more meat far more cheaply. It will probably be a long time before you’re able to buy lab-grown chicken in stores.
1. To produce lab-grown meat, the companies should________.| A．study how to feed live animals. | B．decide where to store meat products. |
| C．add different flavours to sheets of meat. | D．select cells suitable for producing meat. |
| A．future. | B．advantage. | C．techniques. | D．process. |
| A．Doubtful. | B．Worried. | C．Supportive. | D．Uninterested. |
| A．quality. | B．safety. | C．price. | D．taste. |
相似题推荐
【推荐1】Putting Together the Best
Cooking can be a great hobby. You can follow ready-made recipes（食谱），or you can create your own recipes based on your own interests.
You do not have to move to new places to have fun with new kinds of food. You can use any recipe you want. But it is important to think about how different foods taste. Do you like ice cream?
| A．Where do you start? |
| B．Now, people move a lot. |
| C．This idea has a long history. |
| D．One thing you have to learn about cooking is patience. |
| E．But you do not need to stop with green tea and ice cream. |
| F．Ice cream is very sweet and it is easy to make in an ice cream maker. |
| G．After you have learned how to make some recipes, it is time to try something new. |
【推荐2】Best Soda Alternatives
You know soft drinks aren’t a smart way to get rid of your thirst. Making them a habit increases your risk of being overweight. But water isn’t the only smart alternative. Choose pure juice which has fewer calories and more nutrients will contribute to your good health. Studies show surprising benefits from:
Orange Juice
Drinking a couple of glasses of OJ prevents the inflammation that can be caused by a fast food breakfast, making damage to blood vessels less likely, a new study shows. The protective effect may come from the juice’s contents with anti-inflammatory properties.
Grape Juice
It’s a good source of antioxidants that seem to strengthen brain function. In one study, older adults who drink grape juice daily for 12 weeks shows significant improvement on memory tests.
Lemonade Juice
Several studies suggest lemonade can help stay away from kidney stones, a painful problem that’s on the increase and cut your risk of a recurrence by as much as 90 percent with a large daily dose: Mix four ounces of lemon juice with two liters of water and drink straight up or sweetened, says Roger L. Sur, MD, director of the University of California, San Diego, Comprehensive Kidney Stone Center.
Apple Juice
Apples may reduce the risk of colon cancer, prostate cancer and lung cancer. Compared to many other fruits and vegetables, apples contain relatively low amounts of vitamin C, but a rich source of antioxidant compounds. The fiber content, while less than in most other fruits, helps regulate bowel movements and may thus reduce the risk of colon cancer. They may also help with heart disease and weight loss.
1. Drinking soft drinks more often may develop the risk of _____.| A．fatness | B．thirst | C．heart attack | D．cancer |
| A．Orange Juice | B．Lemonade Juice |
| C．Apple Juice | D．Grape Juice |
| A．It contains much more fiber than other fruits. |
| B．Its contents can help fight against inflammation. |
| C．There are abundant antioxidant compounds in it. |
| D．People with kidney stones should drink it more. |
【推荐3】I was about to cross the road when a stinky (臭的) and rotten smell smacked me in the face. That's how I knew I was getting close to Dai's House of Stinky Tofu, one of the city's most popular restaurants.
For nearly 30 years, Wu Hsu Pi-ying, now in her 70s, has been running the family business at Dai's, using a secret fermentation (发酵) process that had been passed down by her parents to create 10 unique varieties of stinky tofu. The beloved street food gives off a smell that calls to mind sour milk and rotting garbage. Love it or not, these spiced and sliced fermented tofu have come to symbolize the city's street food.
Inside the restaurant, framed calligraphy signs in Mandarin characters highlighted stinky tofu's health benefits. On the wall, images of menu items showed the eatery's stinky star served deep-fried, steamed or in a spicy soup.
I couldn't help but think about American TV host Andrew Zimmern, who travels around the globe to taste the world's strangest dishes. After stopping at Dai's, Zimmern spat the food into his napkin, saying. "I can't do it... that is absolutely horrifying."
Stinky tofu is said to be an accidental invention from hundreds of years ago. A tofu merchant opened his container of unsold goods, only to discover that they had started to ferment. At some point, he built up the courage to bite into the greenish mixture and realized it was quite tasty. He quickly started selling the fermented food.
I settled on the spicy stinky tofu soup, made with mushrooms, peppercorns and chillies, and slowly lifted a spoonful of the broth (肉汤) towards my mouth. It turned out that the dish tasted much better than it smelled. The tofu actually helped bring out the freshness of the mushrooms and chilli, and the broth was surprisingly light, given the tofu's rich thickness.
In fact. I liked it so much that I then ordered the cold and raw stinky slabs. As with the stinky tofu soup, if you can stomach the smell enough to taste it, the raw tofu was actually quite pleasant.
I thanked Wu and walked out of Dai's. Back into the clean air of the night, I lifted my hand to my nose to smell the city's stinky snack once more.
1. According to the article, which of the following statements is true about Dai's House of Stinky Tofu?| A．It is the most popular restaurant in the city. |
| B．It is a family business with a history of 70 years. |
| C．The varieties of stinky tofu it serves are a symbol of the city's street food. |
| D．It became popular among foreigners after Andrew Zimmern recommended it. |
| A．The origin of stinky tofu. |
| B．How stinky tofu is produced. |
| C．Why stinky tofu is so popular. |
| D．How stinky tofu arrived in the city. |
| A．Disgusting | B．Delicious |
| C．Acceptable | D．Bland |
【推荐1】When a 14-year-old boy from Atlanta, Georg1a disappeared earlier this year, his mother turned to her smartphone for clues using an app called Family Tracker that helped track his location. It is one of several apps that allow parents to track where their children are.
“You can see where your loved ones are without having to call or bother them,” said Roberto Franceschetti of LogSat, the creators of Family Tracker, which has more than 100,000 users worldwide.
Parents can track the location of their child on a map and send messages. Parents don’t need to own a smartphone to track their children. The service can also be accessible on the web, as long as the phone that is being tracked is running the app.
Family Tracker has an additional service that keeps all data made by the app for a two-week period, which the company calls BDS breadcrumbs(面包屑). The service was used to find the missing boy in Atlanta.
“With a subscription(订阅), we keep all the locations where people have been on our servers. You can see where your kid has been for the past two weeks. You can find out where someone was at a certain time, or when that person was at a specific place,” Franceschetti explained.
“When somebody gets kidnapped(绑架), usually whoever does this throws the phone away or takes the battery out. We were hoping that our app would at least provide information on where the person was kidnapped or where had been in the past. That way the police would have a history or some clues as to who they may have been seeing.”
1. What does the text mainly about?| A．The invention of an app called Family Tracker. |
| B．An app designed to help parents find missing children. |
| C．A smartphone which can activate an alarm in remote areas. |
| D．An app which can be used both on the phone and on the Net. |
| A．The parent must have a smartphone. |
| B．The parent has to buy a map. |
| C．The child must have a phone running the app. |
| D．The child must not be in faraway areas. |
| A．To let parents send messages. | B．To locate where children are. |
| C．To warn children of time. | D．To store data produced by the app. |
| A．parents | B．teachers | C．robbers | D．policemen |
【推荐2】A robot created at Stanford University in California is diving down to shipwrecks (沉船) and sunken planes in a way that humans can’t do. Known as OceanOneK, the robot allows its operators to feel like they’re underwater explorers, too. OceanOneK resembles a human diver from the front, with arms and hands and eyes that have 3D vision, capturing the underwater world in full color. The back of the robot has computers and eight multidirectional thrusters that help it carefully explore the sites of fragile sunken ships. When an operator at the ocean’s surface uses controls to direct OceanOneK, the robot’s touch-based feedback system causes the person to feel the water’s resistance as well as the forms of artifacts (人工制品).
OceanOneK’s realistic sight and touch capabilities are enough to make people feel like they’re diving down to the depths-without the dangers or immense underwater pressure a human diver would experience.
The idea for OceanOneK came from a desire to study coral reefs in the Red Sea at depths beyond the normal range for divers. While OceanOneK was designed to reach maximum depths of 656 feet, researchers had a new goal: 1 kilometer, hence the new name for OceanOneK.
The researchers changed the robot’s body by using special foam to increase buoyancy (浮力) and fight the pressures of 1, 000 meters-more than 100 times what humans experience at sea level. OceanOneK also got two new types of hands and increased arm and head motion.
During OceanOneK’s deep dive in February, team members discovered the robot couldn’t rise when they stopped for a thruster cheek. Flotations on the communications and power line had collapsed, causing the line to pile on the top of the robot.
They were able to pull in the slack, and OceanOneK’s descent was a success. It dropped off a memorial marker on the seabed that reads, “A robot’s first touch of the deep seafloor A vast new world for humans to explore. ”
Khatib, a professor, called the experience an “incredible journey”. “This is the first time that a robot has been capable of going to such a depth, interacting with the environment and permitting the human operator to feel that environment. ” he said.
1. What do we know about OceanOneK?| A．It has colorful eyes. |
| B．It is remotely controlled. |
| C．It is like a human all over. |
| D．It explores underwater world itself. |
| A．To find out the mystery of the ocean. |
| B．To save passengers from sunken planes. |
| C．To collect treasures from shipwrecks. |
| D．To research coral reefs in deep oceans. |
| A．It failed to rise normally. |
| B．It lost touch with the operators. |
| C．It collapsed and piled at the seafloor. |
| D．It floated away with sea currents. |
| A．Robots help people become ocean explorers. |
| B．Robots explore shipwrecks on the ocean bottom. |
| C．Robots search the ocean floor for sunken treasures. |
| D．Robots dive into the deep ocean to locate minerals. |
【推荐3】It is estimated that 95 percent of the ocean’s depths remain unexplored, partly due to limitations in technology. But now, MIT researchers have developed a battery-free, wireless underwater camera that is about 100,000 times more energy-efficient than other undersea cameras. The device takes color photos, even in dark underwater environments, and transmits (传送) image data wirelessly through the water.
The sea is noisy. The autonomous camera transforms mechanical energy from sound waves travelling through water into electrical energy. The camera can also store energy, should it build up enough power for its imaging work. As well as taking photographs, the camera uses sound waves to send the image data it collects to a receiver that reconstructs the data into the appropriate image.
Because it doesn’t need a power source, the camera could run for weeks on end before someone has to pick it up, enabling scientists to search remote parts of the ocean for new species. It could also be used to take images of ocean pollution or monitor the health and growth of fish raised in the fisheries. “The most exciting application of this camera for me personally is in the context of climate monitoring. We are building climate models, but we are missing data from over 95 percent of the ocean. This technology could help us build more accurate climate models and better understand how climate change impacts the underwater world,” says associate professor Fadel Adib.
The researchers successfully tested the camera in several underwater environments. However, the new camera can only transmit data 40 meters from the receiver and the amount of memory makes it limited for long-term use. They plan to enhance the device so it is practical for feeding real-time images and even recording full-motion underwater videos in more underwater settings.
1. What is the second paragraph mainly about?| A．How the camera works. | B．What the camera consists of. |
| C．Where the image data is collected. | D．How the electrical energy is produced. |
| A．Making accurate maps of the ocean floor. |
| B．Searching for new species in the remote oceans. |
| C．Monitoring the growth and health of the farmed fishes. |
| D．Tracking the effects of climate change on the undersea world. |
| A．The reduction of its building cost. |
| B．The extension of the receiver’s life. |
| C．The improvement of the imaging quality. |
| D．The expansion of its memory and wireless range. |
| A．A major breakthrough in sound technology |
| B．A tough challenge of building climate models |
| C．Scientists create battery-free underwater cameras |
| D．Researchers can explore unknown areas of the ocean |
That is good news for people eager to improve themselves and is more attractive to employers. It is also a benefit to industry with better qualified candidates applying for jobs at every level.
Having the benefits of a higher qualification without going to the university campus is attractive to many students. Campus study means greater cost, while online programs are flexible and save time, whether at home or at work. Students can achieve their degrees without causing too much disruption to their career or home life.
In addition to affordable, flexible classes and greater convenience, students also have access to the online learning resources of many of the world’s top educational institutions. They can also communicate with their tutors no matter what time it is or whether either party is away for any reason.
This has opened up the possibility of getting a qualification from a university or college that many students could only have dreamed of in the past. It also allows specialists to get the precise qualifications and focus on their studies. As well as seeing the increase of applicants from lower-incomes and housewives, studying online in the US is even becoming popular with younger people of college age.
Employers have become increasingly welcome and positive to online qualifications as more candidates earn them, especially if they’re properly approved by the US Department of Education.
US institutions have led the way in online education provision. Many top US colleges and universities offer a range of online programs that are highly respected and in every way perfectly fit for adults who need to combine their studies with a working life.
1. According to Paragraph 1, many US colleges and universities .
| A．have begun to lift the barriers to financial investment |
| B．have begun to run an internet-based program |
| C．have had a dream of offering online education |
| D．have gained financial investment |
| A．They can find jobs more easily than on-campus graduates. |
| B．They can get qualifications from US Department of Education. |
| C．They can save money and arrange their time and courses freely. |
| D．They can invest money in different courses provided online. |
| A．dissatisfaction | B．attention | C．attraction | D．interruption |
| A．Adult Education Online |
| B．The Best of USA’s Online Education |
| C．Top US Universities Offering Online Education |
| D．Online Education Taking the Place of Campus Education |
【推荐2】In a country known for high-tech ambitions and giant state-owned firms, the suffering of street hawkers (小贩) may seem insignificant. But in China these days, people like Shui Jin, an old lady riding a wooden cart filled with fruit, are in the spotlight.
Faced with rising unemployment, officials have concluded that pavement stands (货摊) can help solve the economy’s problems. Shui Jin, who used to face the danger of heavy fines, may sell her fruit with more confidence as she slowly makes her way through the narrow lanes of Suzhou. Her family needs the money. Both her daughters-in-law recently lost their jobs, among the tens of millions of people in China hurt by the COVID-19 outbreak.
The government’s support for street hawkers is something of an about-turn. For years the authorities pushed out hawkers, trying to tidy up the chaos that once characterized China’s cities. In the name of “civilizing” urban life, they wanted to see dumplings, plastic toys and T-shirts sold inside shopping malls, not from the back of carts. But on June 1st Premier Li Keqiang signalled a change. Stopping by a snack stand in the city of Yantai, he declared that street hawkers and small shops were vital to the economy. “Only when the people are in good shape can the nation be in good shape,” he said.
Mr. Li’s statement has produced a feeling of excitement about the revival (复苏) of China’s “street-stand economy”. At least 27 provinces and cities have announced that they will create markets for hawkers or, in some cases, let them move their things being sold onto the pavement in front of their shops. The shining example is Chengdu, where street stands were banned in the past but now hawkers have set up a number of stands since March. More than 100,000 jobs have been created in the process.
1. According to the passage, what used to happen to street hawkers in China?| A．Cleaning the street. | B．Running a shop. |
| C．Being given heavy fines. | D．Being in the spotlight. |
| A．an incident. | B．a comfort. |
| C．an inspiration. | D．a complete change. |
| A．China’s street-stand economy has a long history. |
| B．China turns to once-banned hawkers to revive its economy. |
| C．China has high-tech ambitions and giant state-owned firms. |
| D．China is now faced with rising unemployment. |
| A．Quoting the saying. | B．Giving examples. |
| C．Making a comparison. | D．Listing statistics. |
【推荐3】Wasting things is a nightmare (噩梦) for the environment, especially food waste, which does double harm to the environment. A plenty of resources go into the food and the food system also produces lots of greenhouse gases and pollution.
In our homes, restaurants, and food shops, 17 percent of all our food is thrown away—that’s about a sixth of all of the food we have. If you add on the food lost in production, about a third of all food produced never reaches a mouth. At the same time, nearly 700 million people were affected by hunger in 2019, while 3 billion still struggle to afford healthy food. It is mostly households that are to blame: 11 percent of the food ends up in the trash of our homes, compared to a mere 5 and 2 percent from stores and restaurants.
The reasons why food goes to waste are probably familiar to you: dinner party leftovers that never get eaten, food going bad before you cook it, or simply confusion over sell-by and use-by dates that leads to totally fine food ending up in the garbage.
The UN aims to cut food waste in half at the consumer and sale levels by late 2022. Luckily, there’s actually a lot we can do as individuals and governments can make policies to help people and the environment a lot. For individuals, something important is being more thoughtful and prepared when going to the grocery store. Make a list of meals you want to cook, and then only buy fresh produce that you will 100 percent be eating in the next few days. In social aspect, improving education on how to preserve food and understand tricky labels (标签), encouraging food recycling and pushing companies to sell smaller quantities of healthy, fresh food for one or two people could all play a helpful role in bringing down the massive pile of eatable waste.
1. Which of the following contributes most to food waste?| A．Food shops. | B．Restaurants. | C．Households. | D．Food production. |
| A．People eat less than before. | B．The food price is low. |
| C．Food spoils easily during the summer. | D．People are confused about the shelf life of food. |
| A．Grocery stores should supply limited food. |
| B．People should raise their awareness of food conservation. |
| C．Everyone should consume as little food as possible. |
| D．Governments should distribute food resources fairly. |
| A．Health. | B．Fashion. | C．Environment. | D．Science. |
